The device history record review confirms that the device met all material, assembly and performance specifications.The subject device is not available; therefore analysis of the device cannot be performed.From the information that was reported, the user may have over inflated the balloon during preparation as a 20cc syringe was used to inflate the balloon.Per the directions for use (dfu), "to inflate balloon, transfer maximum recommended balloon inflation volume from 20 ml syringe to 1 ml syringe and gently infuse balloon inflation media with 1 ml syringe until desired balloon diameter is attained." using a 20cc syringe can cause the balloon to rupture by allowing more than the maximum recommended inflation media into the balloon; therefore, the investigation concluded that the assignable cause was related to the dfu instructions not followed.
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